Flora of the Hawaiian Islands
Dicotyledon
   Myrtaceae -- The Myrtle Family
      Syzygium
General Information
DistributionA genus of about 1,120 species from the Old World tropics.
Habit
Shrubs or trees, usually glabrous or sometimes with multicellular hairs.
Leaves
Leaves opposite or rarely ternate, petiolate; blade chartaceous to coriaceous, pinnately veined, usually with a submarginal vein, glandular punctate.
Flowers
Inflorescences 1‒3-flowered or flowers numerous in terminal, axillary, or cauliflorous, usually paniculate, umbellate, racemose, or cymose inflorescences; bracts and bracteoles caducous. Flowers with hypanthium usually tapering to a pseudopedicel, apex extended beyond ovary into a rim; sepals (3)4‒5(6), distinct, borne on the hypanthium rim; petals (3)4‒5(6), borne on the hypanthium rim, often obovate, usually glandular dotted, distinct and spreading or coherent and forming a calyptra; nectary disc on distal surface of hypanthium, thin or cushionlike; stamens numerous in 1 to several series, borne on inner surface or margin of hypanthium rim, usually strongly incurved in bud, filaments distinct or connate into bundles; ovary inferior, 2(‒4)-locular, ovules numerous, spreading from placenta.
Fruit
Fruit a berry, subglobose, ellipsoid, pear-shaped, or subcylindrical, pericarp thick and fleshy, leathery, or brittle.
Seeds
Seeds 1(‒6), seed coat loosely coherent to pericarp, cotyledon faces distinct, intercotyledonary inclusion absent.
Notes
The name is derived from the Greek prefix syn- or sys-, together, and the Greek zygon, yolked, in reference to the coherent petals that form a calyptra in some species.
Contributor
Nancy Khan